Finding the Fourth Proportional to 12,806.56, 17,673 and 7,141.24

Step by Step Solution

1. Step 1: Write the proportion equation
   12,806.56 : 17,673 = 7,141.24 : x
2. Step 2: Convert to fraction form
   12,806.56/17,673 = 7,141.24/x
3. Step 3: Cross multiply
   12,806.56x = 17,673 × 7,141.24
4. Step 4: Simplify right side
   12,806.56x = 126,207,134.52
5. Step 5: Solve for x
   x = 126,207,134.52/12,806.56
6. Step 6: Final answer
   x = 9,854.88